Question

代码：

set val(chan)   Channel/WirelessChannel
set val(prop)   Propagation/TwoRayGround
set val(ant)    Antenna/OmniAntenna
set val(ll)     LL
set val(ifq)    Queue/DropTail/PriQueue
set val(ifqlen) 50
set val(netif)  Phy/WirelessPhy
set val(mac)    Mac/802_11
set val(rp)     DSDV
set val(nn)     15
set val(x)      700
set val(y)      500
set val(stop)   130

set ns [new Simulator]
set tracefd       [open trust.tr w]
set windowVsTime2 [open win.tr w]
set namtrace      [open trust.nam w]

$ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)
set topo       [new Topography]
$topo load_flatgrid $val(x) $val(y)
create-god (1)
#create-god (3)

 $ns node-config -adhocRouting $val(rp) \
                  -llType $val(ll) \
                  -macType $val(mac) \
                  -ifqType $val(ifq) \
                  -ifqLen $val(ifqlen) \
                  -antType $val(ant) \
                  -propType $val(prop) \
                  -phyType $val(netif) \
                  -channelType $val(chan) \
                  -topoInstance $topo \
                  -agentTrace ON \
                  -routerTrace ON \
                  -macTrace OFF \
                  -movementTrace OFF\
                   -energyModel "EnergyModel" \
-initialEnergy 50

# Energy model
     $ns node-config  -energyModel EnergyModel \
                       -initialEnergy 50 \
                       -txPower 0.75
                       #-rxPower 0.25 \
                       #idlePower 0.0 \
                       #sensePower 0.0
for {set i 0} {$i < $val(nn) } { incr i } {
           set node_($i) [$ns node]
     }
for {set i 0} {$i < $val(nn) } { incr i } {
                 set xx [expr rand()*600]
                 set yy [expr rand()*500]
                 $node_($i) set X_ $xx
                 $node_($i) set Y_ $yy
                 $node_($i) set Z_ 0.0
           }


$ns at 0.0 "$ns trace-annotate \"MOBILE NODE MOVEMENTS\""
set tcp [new Agent/TCP/Newreno]
$tcp set class_ 2
set sink [new Agent/TCPSink]
$ns attach-agent $node_(1) $tcp
$ns attach-agent $node_(3) $sink
$ns connect $tcp $sink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns at 10.0 "$ftp start"


#setting initial position:
for {set i 0} {$i < $val(nn)} { incr i } {
$ns initial_node_pos $node_($i) 30
}


#$ns at $val(stop) "$ns nam-end-wireless $val(stop)"
$ns at $val(stop) "stop"
$ns at 130.01 "puts \"end simulation\" ; $ns halt"
proc stop {} {
   global ns tracefd namtrace
   $ns flush-trace
   close $tracefd
   close $namtrace
exec nam trust.nam &
}

$ns run

此代码运行但是移动节点每次都是动态的，如何使动态移动节点静态？如何使它成为静态移动节点，并需要在ns2 tcl代码中进行随机偷听

Answer 1

for {set i 0} {$i < $val(nn) } { incr i } {
    set xx [expr rand()*600]
    set yy [expr rand()*500]
    $node_($i) set X_ $xx
    $node_($i) set Y_ $yy
    $node_($i) set Z_ 0.0
}

此代码设置节点的移动性。您可以评论此代码并查看。那么节点应该是静态的。

Answer 2

for {set i 0} {$i < $val(nn) } { incr i } {
    set xx [expr rand()*600]
    set yy [expr rand()*500]
    $node_($i) set X_ $xx
    $node_($i) set Y_ $yy
    $node_($i) set Z_ 0.0
    $node_($i) random-motion 0  ;# disable random motion
}

如何在tcl中使移动节点静态？

2 个答案: